( )6.Antonio likes to study by listening to cassettes.But sometimes his mother thinks he ______ to music.A.is going B.is listening C.listens D.goes
问题描述：
( )6.Antonio likes to study by listening to cassettes.But
sometimes his mother thinks he ______ to music.
A.is going B.is listening C.listens D.goes
答
B,有时她妈妈（发现时）以为他正在听音乐
答
B
答
选 B 首先根据句意 可以排除D 和A 他妈妈认为他当时正在听 应选现在进行时
答
B，选进行时态